Answer:
Michael is 38 and Sara is 29
Step-by-step explanation:
Because it says the sum of their age is 47 you do 47-9=38 so that would be Michael's age and than because Sara is 9 years younger than him and then you would do 38-9=29
Answer:
49
Step-by-step explanation:
hope this helps
9(4)-3+4^2
36-3+4^2
33+4^2
33+16
49
It would be B: a set of points that extends infinitely in two directions